65172470 has 32 divisors (see below), whose sum is σ = 134714880. Its totient is φ = 22451040.

The previous prime is 65172469. The next prime is 65172473. The reversal of 65172470 is 7427156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65172473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13502 + ... + 17681.

It is an arithmetic number, because the mean of its divisors is an integer number (4209840).

Almost surely, 2^65172470 is an apocalyptic number.

65172470 is an abundant number, since it is smaller than the sum of its proper divisors (69542410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65172470 is a wasteful number, since it uses less digits than its factorization.

65172470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31220.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 65172470 is about 8072.9467977932. The cubic root of 65172470 is about 402.4278795206.

The spelling of 65172470 in words is "sixty-five million, one hundred seventy-two thousand, four hundred seventy".